A simple and efficient route to active and dispersed silica supported palladium nanoparticles

被引：69

作者：

Barau, Alexandra ^{[2
]}

Budarin, Vitaly ^{[1
]}

Caragheorgheopol, Agneta ^{[2
]}

Luque, Rafael ^{[1
]}

Macquarrie, Duncan J. ^{[1
]}

Prelle, Ambra ^{[1
]}

Teodorescu, Valentin S. ^{[3
]}

Zaharescu, Maria ^{[2
]}

机构：

[1] Univ York, Green Chem Ctr Excellence, York YO10 5DD, N Yorkshire, England

[2] Roumanian Acad, Inst Phys Chem Ilie Murgulescu, Bucharest 060021, Romania

[3] Natl Inst Mat Phys, Bucharest 077125, Romania

来源：

CATALYSIS LETTERS | 2008年 / 124卷 / 3-4期

关键词：

mesoporous silica; Pd nanoparticles; heterogenous catalysis; Heck reaction;

D O I：

10.1007/s10562-008-9465-x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Various mesoporous silica supported Pd materials were prepared by different methodologies in order to control and optimize the metal nanoparticle sizes for catalytic applications. The catalytic activities (conversion, mol% and selectivity to methyl-cinnamate) of the supported palladium catalysts were investigated in the Heck reaction under microwave irradiation using various haloarenes. Pd materials prepared by co-precipitation exhibited a very poor activity in the Heck reaction compared to that of Pd impregnated samples. Impregnated materials prepared without the use of a specific reducing agent had comparable activities to those of APTS-NaBH4 reduced Pd materials, validating the simplicity of the methodology. High selectivities to methylcinnamate were obtained for all materials.

引用

页码：204 / 214

页数：11

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